Hello, If I have an rbd image and a series of snapshots of that image, is there a fast way to determine how much space the objects composing the original image and all the snapshots are using in the cluster, or even just the space used by the snaps? The only way I've been able to find so far is to get the block_name_prefix for the image with rbd info and then grep for that prefix in the output of rados ls, eg. rados ls|grep rb.0.396de.238e1f29|wc -l. This is relatively slow, printing ~250 objects/s, which means hours to count through 10s of TB of objects. Basically, if I'm keeping daily snapshots for a set of images, I'd like to be able to tell how much space those snapshots are using so I can determine how frequently I need to prune old snaps. Thanks! -Steve -- Steve Anthony LTS HPC Support Specialist Lehigh University sma310 at lehigh.edu
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